<template>
  <div class="header">
    <a href="#/">
      <img class="logo" src="@/assets/logo.png" width="25px" />
      <span class="company">梦学谷会员管理系统</span>
    </a>

    <el-dropdown @command="handleCommand">
      <span class="el-dropdown-link">
        {{user.name}}
        <i class="el-icon-arrow-down el-icon--right"></i>
      </span>
      <el-dropdown-menu slot="dropdown">
        <el-dropdown-item icon="el-icon-edit" command="a">修改密码</el-dropdown-item>
        <el-dropdown-item icon="el-icon-s-fold" command="b">退出系统</el-dropdown-item>
      </el-dropdown-menu>
    </el-dropdown>

    <!-- 修改密码 -->
    <el-dialog title="修改密码" :visible.sync="dialogFormVisible" width="400px">
      <el-form
        :model="ruleForm"
        status-icon
        :rules="rules"
        ref="ruleForm"
        label-width="100px"
        style="width: 300px"
      >
        <el-form-item label="原密码" prop="oldPass">
          <el-input type="password" v-model="ruleForm.oldPass" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="新密码" prop="pass">
          <el-input type="password" v-model="ruleForm.pass" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="确认密码" prop="checkPass">
          <el-input type="password" v-model="ruleForm.checkPass" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
          <el-button @click="$refs['ruleForm'].resetFields()">重置</el-button>
        </el-form-item>
      </el-form>
    </el-dialog>
  </div>
</template>

<script>
import { logout } from "@/api/login";
import passwordApi from "@/api/password";

export default {
  data() {
    // 在return 上面进行申明自定校验
    const validateOldPass = (rule, value, callback) => {
      // console.log(this.user.id)
      passwordApi.checkPwd(this.user.id, value).then(response => {
        const resp = response.data;
        if (resp.flag) {
          // 验证通过
          callback();
        } else {
          callback(new Error(resp.message));
        }
      });
    };

    // 校验确认密码是否一致
    const validatePass = (rule, value, callback) => {
      // value 代表 checkPass
      if (value !== this.ruleForm.pass) {
        callback(new Error("两次输入的密码不一致"));
      } else {
        // 相等,则通过
        callback();
      }
    };

    // 注意:在 return 上面,而上面不能使用 逗号 , 结束
    return {
      user: this.$store.state.user.user,
      dialogFormVisible: false,
      ruleForm: {
        oldPass: "",
        pass: "",
        checkPass: ""
      },
      rules: {
        oldPass: [
          { required: true, message: "原密码不能为空", trigger: "blur" },
          { validator: validateOldPass, trigger: "blur" }
        ],
        pass: [{ required: true, message: "新密码不能为空", trigger: "blur" }],
        checkPass: [
          { required: true, message: "确认密码不能为空", trigger: "blur" },
          { validator: validatePass, trigger: "change" }
        ]
      }
    };
  },

  components: {},

  methods: {
    handleCommand(command) {
      // element-ui 信息提示
      switch (command) {
        case "a":
          // 修改密码
          //this.$message(`点击修改密码`);
          this.handlePwd();
          break;
        case "b":
          // 退出系统
          // const token = localStorage.getItem('mxg-msm-token')
          this.handleLogout();
          break;
        default:
          break;
      }
    },

    // 退出系统
    handleLogout() {
      logout(localStorage.getItem("mxg-msm-token")).then(response => {
        const resp = response.data;
        if (resp.flag) {
          // 退出成功
          // 清除本地数据
          localStorage.removeItem("mxg-msm-token");
          localStorage.removeItem("mxg-msm-user");
          // 回到登录页面
          this.$router.push("/login");
        } else {
          this.$message({
            message: resp.message,
            type: "warning",
            duration: 500 // 弹出停留时间
          });
        }
      });
    },

    // 打开修改密码窗口
    handlePwd() {
      this.dialogFormVisible = true;
      this.$nextTick(() => {
        this.$refs["ruleForm"].resetFields();
      });
    },

    // 修改密码
    submitForm(formName) {
      this.$refs[formName].validate(valid => {
        if (valid) {
          console.log("校验成功");
          passwordApi
            .updatePwd(this.user.id, this.ruleForm.checkPass)
            .then(response => {
              const resp = response.data;
              // 不管失败还是成功,都进行提醒
              this.$message({
                message: resp.message,
                //    type: resp.falg ? 'succcess': 'warning'
                type: resp.flag ? "succcess" : "warning"
              });

              if (resp.flag) {
                // 更新成功, 退出系统,回到登录页面
                this.handleLogout();
                // 关闭窗口
                this.dialogFormVisible = false;
              }
            });
        } else {
          return false;
        }
      });
    }
  }
};
</script>

<style scoped>
/*  上 右 下 左 */
.logo {
  /* 竖直方向 居中 */
  vertical-align: middle;
  padding: 0px 10px 0 40px;
}

.company {
  position: absolute;
  color: white;
}

/* 下拉菜单 右边显示，距离右边40px */
.el-dropdown {
  float: right;
  margin-right: 40px;
}
/* cursor：pointer 指向图标 出现手 */
.el-dropdown-link {
  color: white;
  cursor: pointer;
}
</style>